Of course I think we'll have interstellar transport much sooner than that.
However, I suspect it may never be practical to relocate all members of the
principal species, much less all members of all species (unless you move the
entire planet, a la 'Witches of Karres').  If the choice becomes moving
population by way of space ships, even large ones (hollowed out asteroids or
such), I speculate that the production rate of additional cargo capacity could
not be maintained equal to population growth.  To assume otherwise would be
unpermissibly optimistic by my personal standards.  As an aside, at a board
meeting of the Robert & Virginia Heinlein Foundation last Friday, a 20 year
old tape of a speech in Butler, MO by Robert Heinlein was played for the
board.  In it he strongly encouraged that extrastellar transport be
established in the near future to assure the survival of at least some of
earths' species.

Jim

Roman Black wrote:

> More seriously, you say "the Earth will only be
> habitable for the next billion years", really do you
> think we WON'T have interstellar transport within
> a billion years from now??
> :o)
> -Roman

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads